Makes the great adventure of Principia available not only to modern
scholars of history of science, but also to nonspecialist undergraduate
students of humanities. It moves carefully from Newton's definitions and
axioms through the essential propositions, as Newton himself identified
them, to the establishment of universal gravitation and elliptical
orbits. The guidebook unfolds what is implicit in Newton's words as he
himself would have filled in the steps and completes the argument in
ways that are authentic and not anachronistic, exactly following
Newton's thinking rather than substituting tools of modern calculus or
the formulations of modern physics. It is Newton in his own terms. This
is a wonderful book. --Richard S. Westfall